Updated radiosity for Delphi.

[Georgy]

I've updated program. Now it renders Cornell Box:


source code:
http://www.cnt.ru/users/coding/glrnew.zip

Attemptions to make it realtime (without source):
http://www.cnt.ru/users/coding/rtrad.zip
http://www.cnt.ru/users/coding/rtradnew.zip

Any ideas to make it faster and look better?

[Traveler]

Very impressive!

I'm afraid the samples provided don't look at all like the images you've posted here, I assume you're using the GFX card? (I tried it on a radeon 7000)

Could you provide some information to the how and why of this program?

I can't really help you with your question though.

[Georgy]

Calculation time: about 15 seconds
Video card: GeForce 2 MX/MX400 CPU: 2.4Ghz
desktop colordepth: 32bpp (!!! not 16)

screenshots in PNG format without scale (1:1):






[pascal]Idea:
1) Polygon[i] -> Lightmap[i]
2) Lightmap[i] -> LigtmapPixel[u,v]
3) Lightmap[i].Pixel[u,v] -> lightmap pixel world coordinates(x,y,z)
4) gluLookAt -> eye position, view direction
eye position:= lightmap pixel world coordinates
view direction:= Polygon[i].normal
6) render scene
7) glReadPixels to RadiosityPointer[a,b]
array RadiosityPointer[a,b] -> Color
9) Lightmap[i].Pixel[u,v]:=Lightmap[i].Pixel[u,v]+Color
10) goto 1[/pascal]

p.s. opengl backbuffer may corrupt during the process (do not move window, do not press alt+tab, use 32bpp mode)

[Georgy]

new version released
"Pencil drawing radiosity".
Source code:http://www.geocities.com/tmtlib/download.html

[savage]

Wow very cool indeed.

[WILL]

Wow thats rather impressive. I love the really cool penciled effect.

Hmm... do you think that you'd want to write maybe a small article on Radiosity effects? If you feel there is enough material you can derrive this work that you've done.

[MikeS]

That's awesome, I saw your post on GameDev as well. Coolest radiosity scene I've ever seen quite frankley.